Jamb Physics 2010 Past Questions and Answers

Question 31:

• JAMB 2010

In alternating current circuit at resonance, the angel of lead or lag is

A. π°
B. (π)/2°
C. (π)/3°
D. 0°

Question 32:

• JAMB 2010

In a discharge tube, most of the gas is pumped out so that electricity is conducted at

A. Low voltage
B. Steady voltage
C. High pressure
D. Low pressure

Question 33:

• JAMB 2010

The ground stated energy for the hydrogen atom is 5.44 x 10^-19J . If an electron drops from zero energy to ground state, calculate the frequency of the emitted radiation.
[h = 6.6 x 10^-34 Js]

A. 5.0 x 10¹⁶ Hz
B. 2.0 x 10¹⁶ Hz
C. 5.0 x 10¹⁵ Hz
D. 2.0 x 10¹⁵ Hz
E. No correct option

Question 34:

• JAMB 2010

The ground stated energy for the hydrogen atom is 5.44 x 10^-19J . If an electron drops from zero energy to ground state, calculate the frequency of the emitted radiation.
[h = 6.6 x 10^-34 Js]

A. 5.0 x 10¹⁶ Hz
B. 2.0 x 10¹⁶ Hz
C. 5.0 x 10¹⁵ Hz
D. 2.0 x 10¹⁵ Hz
E. No correct option

Question 35:

• JAMB 2010

Two cars moving in the same direction have speeds of 100 kmh^-1 and 130 kmh^-1 what is the velocity of the faster car as measured by an observer in the slower car?

A. 30 kmh^-1
B. 130 kmh^-1
C. 200 kmh[sup][/sup]
D. 230 kmh^-1